/Engine/Source/Runtime/AIModule/Classes/AIController.h
Computes a launch velocity vector to toss a projectile and hit the given destination. Performance note: Potentially expensive. Nonzero CollisionRadius and bOnlyTraceUp=false are the more expensive options.
bool SuggestTossVelocity ( FVector & OutTossVelocity, FVector Start, FVector End, float TossSpeed, bool bPreferHighArc, float CollisionRadius, bool bOnlyTraceUp )